Tumbling Grit

Kit contains 4 bags consisting of one bag each of the following:

Step one, 16oz 60/90 silicon carbide

Step two, 16oz 120/220 silicon carbide

Step three, 8oz 500/600 silicon carbide

Step four, 8oz 1200 aluminum oxide

Proper amount of grit for running a 15 pound barrel of rock. Package contains 3 pounds total weight of grit.